EP2372441B1 - Fabrication d'un affichage à cristaux liquides avec orientation homéotrope - Google Patents

Fabrication d'un affichage à cristaux liquides avec orientation homéotrope Download PDF

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Publication number
EP2372441B1
EP2372441B1 EP10012086.4A EP10012086A EP2372441B1 EP 2372441 B1 EP2372441 B1 EP 2372441B1 EP 10012086 A EP10012086 A EP 10012086A EP 2372441 B1 EP2372441 B1 EP 2372441B1
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EP
European Patent Office
Prior art keywords
film
liquid crystal
ultraviolet rays
substrate
normal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP10012086.4A
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German (de)
English (en)
Other versions
EP2372441A1 (fr
Inventor
Takashi Sugiyama
Yasuo Toko
Kiyoshi Ando
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Stanley Electric Co Ltd
Original Assignee
Sharp Corp
Stanley Electric Co Ltd
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Application filed by Sharp Corp, Stanley Electric Co Ltd filed Critical Sharp Corp
Publication of EP2372441A1 publication Critical patent/EP2372441A1/fr
Application granted granted Critical
Publication of EP2372441B1 publication Critical patent/EP2372441B1/fr
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
    • G02F1/133788—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by light irradiation, e.g. linearly polarised light photo-polymerisation
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
    • G02F1/133719—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films with coupling agent molecules, e.g. silane
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
    • G02F1/133723—Polyimide, polyamide-imide
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133742—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers for homeotropic alignment
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
    • G02F1/133757—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle with different alignment orientations
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133765—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers without a surface treatment

Claims (9)

  1. Procédé pour fabriquer un dispositif d'affichage à cristaux liquides comprenant les étapes suivantes :
    former un premier film de matériau d'orientation homéotrope sur une surface d'un premier substrat, le matériau étant sensible à des rayons ultraviolets et ayant une propriété d'orientation de molécules de cristaux liquides, en moyenne, verticalement par rapport à une surface du premier film ; et
    appliquer des rayons ultraviolets, polarisés de façon linéaire ou elliptique, au premier film suivant une direction d'incidence inclinée par rapport à la normale à la surface du premier film ;
    former un deuxième film de matériau d'orientation homéotrope sur une surface d'un deuxième substrat, le matériau étant sensible à des rayons ultraviolets et ayant une propriété d'orientation de molécules de cristaux liquides, en moyenne, verticalement par rapport à une surface du deuxième film ; et
    appliquer des rayons ultraviolets, polarisés de façon linéaire ou elliptique, au deuxième film suivant une direction d'incidence inclinée par rapport à la normale à la surface du deuxième film ;
    disposer les premier et deuxième substrats de façon à ce qu'ils soient orientés face à face sorte que lés directions d'incidence vers les premier et deuxième films soit réglées parallèles dans des directions opposées entre elles ; et
    fournir des molécules de cristaux liquides ayant une anisotropie diélectrique négative entre les premier et deuxième substrats orientés face à face ;
    dans lequel :
    une direction du vecteur électrique des rayons ultraviolets polarisés de façon linéaire ou une direction de l'axe le plus long du vecteur électrique des rayons ultraviolets polarisés de façon elliptique est dans un plan défini par une direction respective normale par rapport aux premier et deuxième substrats et la direction d'incidence vers les premier et deuxième film, respectivement ;
    les molécules de cristaux liquides prévues entre les premier et deuxième substrats orientés face à face sont inclinées en s'écartant de la direction normale au premier substrat en direction de la direction d'incidence vers le premier film, et en s'écartant de la direction normale par rapport au deuxième substrat en direction de la direction d'incidence vers le deuxième film, respectivement, avec un angle de pré-inclinaison.
  2. Procédé selon la revendication 1, dans lequel le matériau d'orientation homéotrope est un matériau contenant du polyimide.
  3. Procédé selon la revendication 1, dans lequel le matériau d'orientation homéotrope comporte un couplage silane.
  4. Procédé selon la revendication 2, dans lequel le matériau d'orientation homéotrope contenant du polyimide comporte des chaînes latérales.
  5. Procédé selon l'une quelconque des revendications 1 à 4, dans lequel la direction inclinée par rapport à la normale à la surface du film est comprise entre 5 degrés et 85 degrés par rapport à la normale à la surface du film.
  6. Procédé selon la revendication 5, dans lequel la direction inclinée par rapport à la normale est dans une plage comprise entre 30 degrés et 70 degrés.
  7. Procédé selon l'une quelconque des revendications 1 à 6, dans lequel l'étape consistant à appliquer au premier film des rayons ultraviolets polarisés de façon linéaire ou elliptique comprend les sous-étapes suivantes :
    appliquer des rayons ultraviolets polarisés de façon linéaire ou elliptique à une première région du premier film à travers un premier masque suivant une première direction, et
    appliquer des rayons ultraviolets polarisés de façon linéaire ou elliptique à une deuxième région du premier film à travers un deuxième masque ayant un motif complémentaire au premier masque suivant une deuxième direction tournée de 90 degrés dans le plan du substrat par rapport à la première direction ;
    et dans lequel l'étape consistant à appliquer au deuxième film des rayons ultraviolets polarisés de façon linéaire ou elliptique comprend les sous-étapes suivantes :
    appliquer des rayons ultraviolets polarisés de façon linéaire ou elliptique à une troisième région du deuxième film à travers un troisième masque suivant une troisième direction, et
    appliquer des rayons ultraviolets polarisés de façon linéaire ou elliptique à une quatrième région du deuxième film à travers un quatrième masque ayant un motif complémentaire au troisième masque suivant une quatrième direction tournée de 90 degrés dans le plan du substrat par rapport à la troisième direction ;
    dans lequel, dans l'étape consistant à disposer les premier et deuxième substrats de façon à ce qu'ils soient orientés face à face, les premier et deuxième substrats sont disposés de telle sorte que la première région du premier film et la troisième région du deuxième film soient orientées face à face, et la deuxième région du premier film et la quatrième région du deuxième film soient orientées face à face.
  8. Procédé selon l'une quelconque des revendications 1 à 7, dans lequel l'angle de pré-inclinaison ne devient pas coïncident avec un angle de la direction d'incidence des rayons ultraviolets.
  9. Procédé selon la revendication 7 ou 8, dans lequel le dispositif d'affichage à cristaux liquides comprend une pluralité de pixels, chacun des pixels étant constitué de deux, quatre, ou plus, micro-domaines.
EP10012086.4A 1996-02-05 1997-02-05 Fabrication d'un affichage à cristaux liquides avec orientation homéotrope Expired - Lifetime EP2372441B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP8019025A JP2872628B2 (ja) 1996-02-05 1996-02-05 液晶表示素子の製造方法
EP97101801A EP0788012B1 (fr) 1996-02-05 1997-02-05 Fabrication d'un afficheur à cristaux liquides avec orientation homéotrope
EP09014470A EP2163941B1 (fr) 1996-02-05 1997-02-05 Affichage à cristaux liquides avec orientation homéotrope

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP97101801.5 Division 1997-02-05
EP09014470.0 Division 2009-11-19

Publications (2)

Publication Number Publication Date
EP2372441A1 EP2372441A1 (fr) 2011-10-05
EP2372441B1 true EP2372441B1 (fr) 2014-01-01

Family

ID=11987936

Family Applications (4)

Application Number Title Priority Date Filing Date
EP10012087.2A Expired - Lifetime EP2354838B1 (fr) 1996-02-05 1997-02-05 Procédé de fabrication d'un affichage à cristaux liquides avec orientation homéotrope
EP09014470A Expired - Lifetime EP2163941B1 (fr) 1996-02-05 1997-02-05 Affichage à cristaux liquides avec orientation homéotrope
EP97101801A Expired - Lifetime EP0788012B1 (fr) 1996-02-05 1997-02-05 Fabrication d'un afficheur à cristaux liquides avec orientation homéotrope
EP10012086.4A Expired - Lifetime EP2372441B1 (fr) 1996-02-05 1997-02-05 Fabrication d'un affichage à cristaux liquides avec orientation homéotrope

Family Applications Before (3)

Application Number Title Priority Date Filing Date
EP10012087.2A Expired - Lifetime EP2354838B1 (fr) 1996-02-05 1997-02-05 Procédé de fabrication d'un affichage à cristaux liquides avec orientation homéotrope
EP09014470A Expired - Lifetime EP2163941B1 (fr) 1996-02-05 1997-02-05 Affichage à cristaux liquides avec orientation homéotrope
EP97101801A Expired - Lifetime EP0788012B1 (fr) 1996-02-05 1997-02-05 Fabrication d'un afficheur à cristaux liquides avec orientation homéotrope

Country Status (6)

Country Link
US (1) US5912717A (fr)
EP (4) EP2354838B1 (fr)
JP (1) JP2872628B2 (fr)
KR (1) KR970062768A (fr)
DE (1) DE69739829D1 (fr)
TW (1) TW375700B (fr)

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EP0788012A3 (fr) 1998-06-17
EP0788012B1 (fr) 2010-04-07
KR970062768A (ko) 1997-09-12
DE69739829D1 (de) 2010-05-20
EP2163941B1 (fr) 2012-12-26
JPH09211468A (ja) 1997-08-15
EP2163941A1 (fr) 2010-03-17
EP2354838B1 (fr) 2013-06-12
TW375700B (en) 1999-12-01
EP0788012A2 (fr) 1997-08-06
JP2872628B2 (ja) 1999-03-17
EP2372441A1 (fr) 2011-10-05
US5912717A (en) 1999-06-15
EP2354838A1 (fr) 2011-08-10

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